Yielding attachment for sewing machines



Feb. 28, C. H SANBORN YIELDING ATTACHMENT\EOR SEWING MACHINES y fue@ Aug. 3o, 1930 Patented Febiji28," d l 'CHRLES H...sAnBoniv;toriv'nwiauir'onr. jupes, sncriuslfi'r'rs.'i` AssIeNoR 'ro- 'HALEY, Y omnynocxwoomcomrnny;1Nc.,on,nvERETmMAssAoHUsETTs nzcoaronngzronj j i "rrncnmnnr iron: SEWING yMaourines .npiincfiorfmed-Augused1930.4,serial' 116.418,920.

' sewing machines,A and's'an; improvement .011

fthe machine and device ofl "Iny prior invenf.

tion; shown in `my .patent *application rSerial ,i fmachines which would :enable two `layers-.or edges offmaterial, suchfas inshoe leather -or glove manufacture, or the likefltofbe attached by a single rows ,ofy stitching/with a 'f beading or piping ;iI1terposed,therebetween a Single row Off stitChing.r

simultaneously with the stitching,andk providing for all three articles tobeithusunited 1. at a singlel operation simultaneouslyend by] Said prior device .was satisfactoryin `operating upon two layers which"y were, the

j two layerslto be joined 'with the: interposed ,5. beading `whenall threewereofsinglesheets e orof substantially uniform thicknessbutlwas lf not satisfactory where --.either=aof-the layers tobe united included-aY seemed or 'sewed jointf owing to theinequalities thickness inthe particular layer l having such a L seam over which the piping andthe-other layer had to ,.bjoined. e" i f .tion ,f the stitching, guiding- "and, feeding of the beading will-.be continuously-carriedout irrespective of layers-j linge preferred embodiment of mydnvenf in' c ombinationlwithfa presserlfoot and :adj acent parts of Y a f sewlng; mach1ne,-y shown' `in -1 My present lnventionrprovides. means to automatically take,V care? of any such inequal- 1 -ities inthe layersjlorpartstobe sewedgand attached, such asj often occurin shoe manufacture where the piping is to bek ia ttacl` 1 ed over a previously `joinedor stitched portion. 'In' carrying out vmypresent inventionfl r.' utilize anv attachment for. sewingfi'machines .substantially similar jto that offlnyprior de-f. vice but having yielding means for y guiding `the piping so that during- `thfegfeeding o 'pera- 1i In my former -invention `.l providedthe 90 inequalities in eitherI rofthe Referring to attached 11 F aiplanviewillustrating e iingkof; the twojrlayers 3 and v the interposed beading; over 'a seemed portion in roneflayer;

5- 5 ,of"-Fig.3;j,

,Fg. 6fis a fragm f ingguide andedgegudegf f f e Fig. 7 is a plan view ofia shoe upper com-j prising avainp, quarters land tongue;

Fig, S-isan enlarged plan viewillustrat-yk lnguniting the vamp, beading and tongue' potions .of vtheshoegupper shown in Fig, 7, an v e Fig-9 isa cross-sectional view Ourthe-line 9j-yf9goffFig. 8. *f

A As

sewing machine frame vis indicated at 1t'o which is attached my novel device; ."2;indi icates the usua1need`le` and3fthe presser. foot ofjthe ysewing machine. v e

Toa `portion of the .francel l :Ls/secured a `et havin a depending portion 7. Preferably the brac et 5 haslarge recesses8, L8, through These parts and l0 are thus capable ofv ver-V theguide 2O into desired position with rela` tionto .the -work 'andthe worktable 9.

beading or piping guides substantially rigid provide the beading guide on apivot, so that same may'yield'whenitstriles a raised portion, such as the seamfin one of the layers rkbeingunited'. F or this'purpose I secure the beading guide itself .onthe end of La piv-` Lotedlev'er 21 with a portionformed tov provide aniupper guidingface 22,.'the slot. 23n

the beading guide 20 Y being Y 0f appropriate F ig. 4 (isi-a cross-sectional view yonthe line bracket byattaching screws 6, 6, saidibrack-v tical,v as well aslaterah .adjustment to` vbring withlfafholdingb'racketexcepting for slight Qadjustability, and in my present vdevice I` whichrthe securing'screws `6, 6,(pass to adord Ameans lfor vertical"adjustment*of theentirev f apparatus. Attachedto the Vportion lis a plate y10 secured at itsjuppermostjendby ai set screw 1 1 andsecured at the-lower portion by a set screw passing-through,anfelon-` l gated' longitudinalslotrl to Vpermit Vlateral f adjustmentof the` platelO on the portion 7. f

` width and size to receive the beading or piptherein a slot 27 to receive the stemtotman.

adjusting screwBO. This screw, is threaded.

into atapped recess inthe dependingportfion i A 'thicknessinthelayersgpiesented by aseamed ing being operated on. This lever-21 is pivoted to the lower end of the plate l0 by a set screw 25, and said lever has an upwardly eX- tending arm 26 enlarged iat its-uppermost end, as best `shown in Figi'-2,-andhaving 7 of the bracket 5. y

A pair of springs 28` and 29 are interposed between the headinf.,therscrewreandrthe upper portion26 of the pivotedlever and the inner surface of saidtleverandlthe. member@ 7 respectively,`as best shown in Fig. l. a ,Ad-

` `justment of the screw 30 controlsthe ten-A sionA oit-"thesespringsz`28 fandw29,-iwhich" springs, in turn, hold the. pivotedfleverl 'yielding' in ndesired position.` I may `provide washers between the springs-28.#and29..and

*the portion 26 of.the`-lever',;which washers `will span the slot 27 and facilitate the rocking of Asame between the-springs ar'idover` the shank of the adjusting screwl 30 during the yielding action ofthe guide 20, 'as' itfslides over an obstructionsuch ash-the increased "ln-Figs. 3 and 4 Iillustra'te'theoperation of my presenttimproved yielding heading? AI-guide when' engaged inthe operation ofaunittom layerfand 37 inthe work.

' In; Fig. 7 I illustrate a Ashoe construction '.a-flOtongue 44. Y f

1' Figs. 8 and 9-are illustrative-:ofthis-operaf tion whereinthe beadingguideQO-yieldsfupseam 4occasioned lbythe tonguew44wbeing Iunited tothe portion41l` in'theshoe upper materials. n

l In the `operation of the presenti device ithez adjustment for height ismade oneithe bracket f 5 by the screws 6, 6 throughftheSlottedde cesses 8, Sthereininto correspondingtapped e recesses `in the screw tightened toeholdvit inidesired-position WithV the line offesed `offthe-work. "The ten-v sion screw -30` may beadjusted at-any--time r y `to provide desired-- tensioni on i the' pivoted lever 2l. The beading .or pipingJ `33 is then threaded throught-he recess 23 othe-beading guide `20 andthe upper and-lower-layersof the'worl are positioned an-dfit-ted, the; npper f layer beingpressed againstithe-guiding-face 22, thereupon-the Vfeeding of'themachine; op-

erates as a normal sewing machina-#feeding ythe work forwardly, with-theibea'dinggnide 20 having capacity to yield and ride over and upon, and then down after any increased thickness in the work is interposed in the and Awliichenlvvill coinpensateifor any `uneven joint, edge, or section, such as maybe'ffered by-V eeams,43,01bysubstantial length, as illustrated at the junction of the tongue 44 with? thaadjacentnpontions.

y Vhat kI claim is:

` i LiAnattaeh-menfon sewing machines including sewing instrumentalities,comprising j afsupport'lixed'to said machine, a-lever piv- =otedadjacent-to the flowerend ofsaid-sup- -port, a tubularguideiatoneend ofsa-id lever4 and *adapted` -to' 'be-positioned gbetweenetwo `layers @to be united` f bt* v"the: sewingl instru- 34lnentalities andlto-.gui e 'athird vla-yerithere- '-ibetweenf, and resilient meansdon the Aopposite p bular gnidetoautomaticallylyield on meeting `thickness aiorded. by a seamedV portion/in the -worl below. i

-increased 4ithicknessesfl in either the 11p-per or l-lower flayersoperated onI bythe sewinginsptrnmentalities.

1 2.1An'fattachmentorsewing machines i-ncluding sewing instrumentalities, comprisf-l'ngasupport xedtosaid machine, allever fpivoted adjacent to the" lower/'endet' said --eupport, -a :slanti-ng tubular;` guide at ,one end of sai lever-'and adapted to be positioned y.betweentwo layers 'y to tbe united by the sew- -VVing -instrumentalities and toguide a third "-:1layepi(,.herebetween,- and' adjustable resilient e-m'eanson-the opposite-endfof -said pivoted lever permitting-said tubular-guide to -a-utovmatically `yield` `on -flmeeting increased thickwardly-l when going. over fthe' r' length fof Athe nesses in either the upper or lower layers opferated-'on by Athe sewing instrumentalities.

f 3.jlAnattachment for sewing machines infel-udingsewing instrnmentalities, comprising afsuppoi't' fixed-:to saidwmachine, a pivoted lever Jadj acentto fthe lowerend of sa-id suprt, a flattened portion. at onefend fsaid ever'ehaving a tubular guide therethrough,

-saidf-fiattened portion and said tubular guidel beingf-slanting, said' flattened portion being o adapted to be positionedbetween Ltwolayers The plate l0 may-be adgustedand lthe set tofbe united ."-by ithe sewing instrument-alities to automatically yield on meeting increased -thiclmessesffr ineitherltlie upper or lower layers operated on` by the fsewing instrument-alities.

4. An attachment for ,sewingmachines-in- VV`"cldlngsewinginstrumentalities, lcomprising -aislrpport fixed to'saidfmachine, apivotedleaV attened Y offset portion atwene end ofesaid lever having a tubular Vguide ltherethrough,`-

i ybeing slanting, said; 'lattened'iportion bei'ngg,

adapted to be Apositioned V,between `:two layers f tobe unitedv by the sewing"instrumentalitiesl` and to guide. a third layer therebetween, and k1 'resilient means .on the 4opposite end, of said' v f pivoted lever permittingsaid tubular guide y to automaticallyl yield on meetingeincreased y thicknesses ineither the upper or lower layers llame to'this'speci'fcatiom l operated on vbythe sewing,instrumentalities. y f' 5.k Anattach'ment for sewingmachinesin-L between, saidtubular guide slanting k from'its t entrance `to its outlet, 7and resilient means` associatedwith the opposite'endaof j saidpiv-` oted g lever v permitting said tubular guide to automaticallyr yieldlon'meeting increased` a thicknessesin either theupperor lower layers j operated on by the sewing instrumentalities;

In testimonyv whereo,f,`i1ihave "signed myV f cluding rsewingV instrumentalitiegpcompris? i inga support fixed to said 'mach1ne,..af1everj vsaid -lattenedportion Kbeing adapted to be pivoted adjacentto the lowerend ofsaid slip-'p l f e v`port,-a flattened lportion at :one end. ofY saidifv a f- 1p",.leverhavinga tubularlgnideA therethrogh, a said fiattened portionand said tubular guide being positioned angularly, said l tubular guide slanting from'its entrance toits outlet,

Y positionedbetween two layers to kbefunited bythe sewing instrumentalities andto guide l a ythird layer therebetween,y and resilient 'y means on the opposite end of said pivoted le-f I yaver Y permitting saidv tubular guide to `auto-. f

matically yieldfon meeting increasedthick- Y lnesses 1in either the upperor lower layers opy' erated on by the sewing instrumentalities. e 1

6. An attachment'for sewing machines "including sewinv n e ing ,a support xed to said machine, a :lever instrumentalities, compris# plvoted ladjacent to the lower end of said slipsk f port, a flattened-portion at 'one end of said levery having a tubular guideltherethrough a a andy adapted vto'L be positioned between two layers to be united .iby thesewinglyginstrujv g n'rentalitiesy andfto guide a third layer there- ,e

between, the opposite end ofsaid lever apro*l jectifngupwardly"adjaeenttoy said support and having. an elongatedslot therein, an-ad-V gated slot and into said support, andresilient means associated with the. slotted end offsaid 415.1ever permitting said tubular guide portion Y7. An attachment for sewingmachines including sewing linstrumentalitie's, comprising ;y

apivoted lever, a' tubularl guide atoneend vof said lever :adapted -to be positionedvbeetween two layers to be united by thefs'ewing,l instrumentalities and to guide a'third layer,

Vpermitting said Vtubular guide` .to automatijusting screw extendingthroughsaid elon- Y e therebetweemand'resilient means 'associatedA cally", yield on meeting increased thicknesses i i A' in either the upperorlowerlayersoperatedv on by the sewing `instrumentalities.ee`

y 8. attachmentfor sewing machines ine cluding sewingins'trumentalities, comprising,

` y"a .pivotedilevenfa tubular. guide at one 'end f a of sald'lever adapted to be positioned betweenv two flayers to be united by thefsewing instrl'h mentalities andto guide athird'layer there. 

